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1897 History of the Discovery and Report of Progress in the Study of Daemonelix. Univ. Studies Vol., 2; Bull. Geol. Soc. Amer., vol., 8.

1903 Present Knowledge of the Distribution of Daemonelix. Science, vol., 18.

Skeletal Parts of Moropus. Neb. Geol. Sur. Pub. No. 3.

Case, E. C.
1895 On the Mud and Sand Dikes of the White River Oligocene. Amer. Geol. vol., 15.

Chaney, Ralph W.
Notes on Two Fossil Hackberries from the Tertiary of Western U. S. Carnegie Inst. Wash. Pub. 349, pp. 49-56, 1 plate.

Cook, H. J.
1912 Faunal Lists of the Tertiary Formations of Sioux Co. Neb., Neb. Geol. Sur. Pub. vol., 7, pt. 5.

1915 Notes on the Geology of Sioux Co. Neb. and Vicinity. Neb. Geol. Sur. Pub. vol., 7, pt. 11.

Cope, Edward D.
1882 The Tertiary Formations of the Central Region of the United States. Amer. Naturalist vol., 16.

Culbertson, Thaddeus A.
1851 A Journal of an Expedition to the Mauvaises Terres and the Upper Missouri in 1850. Smithsonian Inst., 5th Ann. Rep.

Dall, W. H. & Harris, G. D.
1892 The Neocene of North America. U.S.G.S. Bull, no. 84.

Darton, N. H.
Scotts Bluff Folio. U.S.G.S. Atlas no. 87.

1901 Preliminary Description of the Geol. and Water Resources of the Southern Half of the Black Hills and Adjoining regions in South Dakota and Wyoming. U.S.G.S. 21st Ann. Report Pt. 4.

1903 Prelim. Report of the Geol. and Water Resources of Nebraska, West of the One Hundred-Third meridian. U.S.G.S. 19th Ann. Rept. Pt. 4,; U.S.G.S. Prof. Paper no. 17.

1905 Preliminary Report on the Geology and Underground Water Resources of the Central Great Plains. U.S.G.S. Prof. Paper no. 32.

1909 The Big Badlands. Scribners Mag., vol., 46.

Davis, W. M.
1900 Continental Deposits of the Rocky Mountain Region. Geol. Soc. Amer. Bull., vol., 11.

1900 The Fresh Water Tertiary Formations of the Rocky Mountain Region. Am. Acad. Art, and Sci. Proc. vol., 35.

Douglass, E.
1901 Fossil Mammalia of the White River Beds of Montana. Trans. Amer. Philos. Soc., Vol., 20.

Farr, Marcus S.
1896 Notes on the Osteology of the White River Horses. Am. Philos. Soc. Proc., vol., 35.

Farrington, O. C.
1899 A Fossil Egg from South Dakota. Field Museum. Geol. Sur., Vol., 1.

Frick, C.
1928 History of the Earth: Childs Frick Tertiary-Quaternary expedition. Nat. His., vol., 29, no. 1, p. 107.

Greene, Francis V.
1853 Chemical Investigation of Remains of Fossil Mammalia. Am. Jour. Sci. 2nd. Ser., vol., 16, 1853. Acad. Nat. Sci. Phil. Proc., vol., 8.

Hatcher, J. B.
1893 The Titanotherium Beds. Amer. Nat., vol., 27.

1902 Oligocene Canidae. Carnegie Museum Mem., vol., 1.

1902 Origin of the Oligocene and Miocene Deposits of the Great Plains. Amer. Philos. Soc. Proc., vol., 41.

Hay, O. P.
1902 Fossil Vertebrata of North Amer. Bull. U.S.G.S. vol., 179.

1908 The Fossil Turtles of North America. Carnegie Inst. Wash.

1930 Second Bibliography and Catalogue of the Fossil Vertebrata of North America. Carn. Inst. Wash., no. 390, vol., 1, 1929.

Hayden, F. V.
1856 Explorations in the Dakota Country in the Year 1855, by Lieut. G. K. Warren, Topographical Engineer of the "Sioux Expedition." Sen. Ex. Doc. No. 76, 35th Congress, 1st Session.

1857 Notes Explanatory of a Map and Section Illustrating the Geol. Structure of the Country bordering on the Missouri River, from the Mouth of the Platte River to Fort Benton. Acad. Nat. Sci. Phil. Proc., vol., 9, with map.

Hayden, F. V.
1858 Notes on the Geology of the Mauvaises Terres of the White River, Nebraska. Acad. Nat. Sci. Phil. Proc., Vol., 9.

1866 Exploration of the "Badlands" or "Mauvaises Terres" of the Upper Missouri Region. Amer. Jour. Sci. 2nd. ser., vol., 42, p. 425.

1869 On the Geology of the Tertiary Formations of Dakota and Neb. Acad. Nat. Sci. Phil. Journ., vol., 7.

Holland, W. J. & Peterson, O. A.
1914 The Osteology of the Calicotheroidea, with special reference to a mounted skeleton of Moropus elatus (Marsh, now installed in the Carnegie Museum). Carnegie Mus. Mem., vol., 3.

Leidy, Joseph
1852 Descr. of the remains of Extinct Mammalia and Chelonia from Neb. Terr., Coll. during the Geol. Survey under the direction of Dr. David Dale Owen. Rept. of a Geol. Sur. of Wisconsin, Iowa, and Minn. and incidentally a Portion of Nebraska Territory by David Dale Owen, United States Geologist, Phil.

1853 The Ancient Fauna of Neb. or a description of the Remains of Extinct Mammalia and Chelonia from the Mauvaises Terres of Neb. Smith. Inst., vol., 16.

1856 Notices of Remains of Extinct Mammalia discovered by Dr. F. V. Hayden in Neb. Territory. Proc. Acad. Nat. Sci. Phil., vol., 8.

1857 Notice of some remains of Extinct Vertebrata from the Valley of the Niobrara Riv. collected during the exploring exped. of 1857, in Neb. under the command of Lieut. G. K. Warren. U.S. Top. Eng. Proc. Acad. Nat. Sci. Phil., vol., 10.

1869 The Extinct Mammalian Fauna of Dakota and Neb., including an account of some allied forms from other localities, together with a synopsis of the Mammalian remains of North. America. Acad. Nat. Sci. Phil. Jour., vol., 7.

1871 Report on the Vertebrate Fossils of the Tertiary Formations of the West. Prelim. Rept. U.S.G.S. of Wyo. and portions of Contiguous Terr.

1873 Contrib. to the Extinct Vertebrate Fauna of the Western Tertiaries. U.S.G.S. Terr. Rept., vol., 1, pt. 1.

1847 On a new Genus and species of Fossil Ruminantia, Poebrotherium Wilsoni. Acad. Nat. Sci. Phil. Proc. vol., 3.

Lesquereux, Leo.
1883 Contrib. to the Fossil Flora of the Western Territories. Pt. 3, Cret. and Tertiary.

Loomis, F.B.
1904 On some Marine Fossils from the Titanotherium beds, Science vol., 19.

1910 Osteology and Affinities of the Genus Stenomylus. Am. Jour. Sci., vol., 29.

Lucas, F. A.
1901 Animals of the Past. New York, 1901, 8 vols.

Marsh, O. A.
1875 Ancient Lake Basins of the Rocky Mountains Region. Am. Jour. Sci. 3rd. ser. vol., 9.

Marsh, O. C.
1877 Introd. and Succession of the Vertebrate Life in Amer. Am. Ass. Adv. Sci. Proc., 26.

Marsland, T. H.
Notes on the Chemical Composition of the Silicious Tubes of the Devil's Corkscrews, Daemonelix. Univ. Studies, Univ. Neb. vol., 2, no. 2.

Matthew, W. D.
1899 Is the White River Tertiary an Aeolian Formation, Am. Nat. Vol., 33.

1899 A provisional Classification of the Fresh Water Tertiary of the West. Am. Mus. Nat. His. Bull, vol., 12.

1903 The Fauna of the Titanotherium beds at Pipestone Springs, Montana. Bull. Amer. Mus. Nat. His. Vol., 19.

1905 Notice of Two Genera of Mammals from the Olig. of South Dakota. Bull. Amer. Mus. Nat. His. vol. 21.

1918 Contrib. to the Snake Creek Fauna. Bull. Amer. Mus. Nat. His. vol., 38.

1923 Fossil Bones in the Rock-The Fossil Quarry near Agate, Sioux Co. Neb. Natural History July-August, 1923, vol., 23, no. 4.

1924 Third Contrib. to the Snake Creek Fauna. Am. Mus. Nat. His. Bull., Vol., 50m.

Matthew, W. D. & Cook, H. J.
1909 A Pliocene fauna from Western Nebraska. Bull. Amer. Mus. Nat. His., vol., 26.

Matthew, W. D. & Gidley, J. W.
1906 New or little known mammals from the Miocene of South Dakota. Bull. Amer. Mus. Nat. His., vol., 22.

Newberry, J. S.
1871 The ancient lakes of Western Amer., their deposits and drainage. Amer. Nat., vol., 4.

O'Harra, C. C.
1910 The Badland formations of the Black Hills region. South Dakota State School of Mines Bull., no. 9.

1920 The White River Badlands. South Dakota State School of Mines Bull., no. 13.

Osborn, M. F.
1896 Prehistoric Quadrupeds of the Rockies. Century Mag., vol., 52.

1898 The extinct rhinoceroses. Am. Mus. Nat. His. Mem., vol., 1.

1901 Prof. Fraas on the aqueous vs. aeolian deposition of the White River Oligocene of South Dakota. Science, vol., 14.

1918 Observations on the skeleton of Moropus cooki in the Amer. Museum. Geol. Soc. Amer. Bull., vol., 29.

1929 Titanotheres of ancient Wyo., Dakota, and Neb. U.S.G.S. Mon., 55, 1929, 2 vols.

Age of Mammals in Europe, Asia and North America. Scribner's & Sons, New York.

Osborn, H. F. & Matthew, W. D.
1909 Cenozoic mammal horizons of Western North Amer. with faunal lists of the Tertiary mammalia of the West by W. D. Matthew. Bull. U.S.G.S. 361.

Osborn, H. F. & Wortman, J. L.
1894 Fossil mammals of the lower Miocene White River beds. Coll. of 1892. Am. Mus. Nat. His. Bull., vol., 6.

1895 Perissodactyls of the Lower Miocene White River beds. Am. Mus. Nat. His. Bull., vol., 7.

Owen, David Dale.
1852 Incidental observations on the Missouri River and on the Mauvaises Terres. Rept. Geol. Sur. Wis., Iowa, Minn., and incidentally a portion of Neb. Terr. Phil.

Peterson, O. A.
1904 Osteology of Oxydactylus. Carnegie Mus. Ann., vol., 2.

1905 Des. of new rodents and discussion of the origin of Daemonelix. Carnegie Mus. Mem., vol., 2.

1906 The Agate Spring Fossil Quarry. Carnegie Mus. Ann., vol., 3.

1908 The Miocene of Western Neb. and East. Wyo. and their Vertebrate fauna. Carnegie Mus. Ann., vol., 4.

1910 Descrip. of the New Carnivores from the Miocene of West. Neb. Carnegie Mus. Mem., vol., 4, no. 5.

1914 The osteology of Promerycoherus. Carnegie Mus. Ann., vol., 9.

Prout, Hiram A.
1847 A des. of a fossil Maxillary bone of Paleotherium from near White River. Amer. Jour. Sci. 2nd. ser. vol., 3.

Scott, W. B.
1891 Osteology of Mesohippus & Leptomeryx with observ. on the modes and factors of evolution Jour. Morph., vol., 5.

1891 On the Osteology of Probrotherium; a contribution to the Philogeny of the Tylopods. Jour. Morph., vol., 5.

1894 The later Tertiary lacustrine formations of the West. Geol. Soc. Amer. Bull., vol., 5.

1895 The osteology of Hyaenodon. Acad. Nat. Sci. Phil. Jour., vol., 9.

1895 The osteology and relations of Protoceras. Jour. Morph. vol., 11.

1898 The osteology of Elotherium. Am. Philos. Trans., vol., 19.

1898 Notes on the Canidae of the White River Olig. Am. Philos. Soc. Trans., vol., 19.

1913 A history of Land Mammals in the Western Hemisphere. New York.

1877 Prelim. account of the fossil mammals from the White River For. contained in the Mus. Comp. Zool. Pt. l. Mus. Comp. Zool., vol., 13.

Scott, W. B. & Osborn, H. F.
1890 Prelim. account of the fossil Mammals from the White River and Loup Fork formations, contained in the Mus. Comp. Zool. Pt. 2. Bull. Mus. Comp. Zool., vol., 20.

Tood, James E.
1897 Volcanic dust in S. W. Neb. and South Dak. Science, vol., 5.

1898 The Exploration of the White River Badlands in 1898. S. Dak. Geol. Sur. Bull., No. 2.

Troxell, E. L.
1916 Olig. fossil Eggs. Wash. Acad. Sci. Jour., vol., 6.

Wanless, H. R.
1923 Stratigraphy of the White River Beds of South Dakota. Proc. Am. Phil. Soc., vol., 62.

Wortman, J. L.
1893 On the divisions of the White River or Lower Miocene of Dakota. Am. Mus. Nat. His. Bull., vol., 5.

1895 On the osteology of Agriochoerus. Am. Mus. Nat. His. Bull., vol., 7.

1898 The extinct Camelidae of North America and some associated forms. Am. Mus. Nat. His. Bull., vol., 10.

Yard, Robert Sterling.
1931 The Nat. Parks Portfolio. Sixth ed. revised by Isabelle F. Story. U. S. Govt. Printing Off. Wash.